/Engine/Source/Runtime/RenderCore/Public/RenderTargetPool.h
Allows to remove a resource so it cannot be shared and gets released immediately instead a/some frame[s] later.
void FreeUnusedResource ( [TRefCountPtr](API\Runtime\Core\Templates\TRefCountPtr)< [IPooledRenderTarget](API\Runtime\RenderCore\IPooledRenderTarget) > & In )